physics
posted by ken .
a particle of mass m moving with a speed v meters per second strikes a particle of mass 3m at rest and joins together. express the final kinetic energy as a fraction of initial energy
Respond to this Question
Similar Questions

physics
One particle has a mass of 3.00*103 kg and a charge of +7.60 µC. A second particle has a mass of 6.00*103 kg and the same charge. The two particles are initially held in place and then released. The particles fly apart, and … 
physics kinetic energy
a) if a particle's speed decreases by a factor of four, by what factor does its kinetic energy change? 
Physics
A 59 g particle is moving to the left at 29 m/s. How much net work must be done on the particle to cause it to move to the right at 38 m/s? 
Physics please help
A particle of mass m1, traveling at speed v0, collides headon with a particle of mass m2 at rest. The collision is perfectly inelastic, i.e., the particles fuse together at the collision. Calculate the fraction of the initial kinetic … 
physics
A particle has a kinetic energy equal to its rest energy. (a) What is the speed of this particle? 
Chemistry
Kinetic energy = 1/2 mv^2 where m is the mass of the particle and v is the velocity of the particle. A joule is the SI unit for energy and is kg.m^2/s^2. Find the energy in joules of a 56.7 g mass moving at the speed of 70. km. hr. 
Physics
Question: particle J with zero initial mass and X energy accelerates from a static start to 'C' (light speed) in a time frame of N and mass increases 10 to the 28th power per nanosecond What is the mass on particle J? 
Physics
A neutron with mass 1.67e27 kg moving with speed 5.0 × 101 km/s makes a headon collision with a boron nucleus, originally at rest, with mass 1.66e26 kg. A) If the collision is completely inelastic, so the particles stick together, … 
Physics
A particle of mass m1 = 2.5 kg moving along the x axis collides with a particle of mass m2 = 4.9 kg initially at rest. The incoming particle is deflected in the direction 22 degrees above the x axis, whereas the target particle moves … 
Physics
A particle of mass m kinetic energy K momentum p collides head on elastically with another particle of mass 2m at rest A) Momentum of first particle ?